GreenSure is a designation applied to a line of Shrewin Williams paints and coating products that indicates that they were designed and manufactured taking steps to reduce environmental impact and to meet or exceed the most stringent regulatory requirements.

Requirements for architectural products include: VOC limits, aromatic content limits, chemical component restrictions (i.e. excluded ingredients such as benzene, formaldehyde) and meet standards for stain removal, opacity, and abrasion resistance.

Requirements for product finishes include: VOC limits, lead, formaldehyde, chromate hazard free, water reducible, and HAPs free.

Requirements for Caulks and Sealants include: meeting VOC limits, and product packaging has at least 25% post-consumer-recycled content.

Some products designated as GreenSure have also been certified to Good Housekeeping Green Seal; and GreenGuard standards.